Patent US2498438A successfully refreshed from Google Patents.
US2498438A
Expired / Lapsed
US
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Variable load brake
Assignee: Automobiles Citroen SA
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Filing: 1945-07-18
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Granted: 1950-02-21
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Expires: 1965-07-18
Abstract
No abstract record available.
Inventors
- 👤 Rostu Georges Levesque Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:39
CPC Classifications
B; B60; B60G; B60G21/00; B60G21/02; B60G21/04; B60G21/05; B60G21/055; B60G21/0551; B60G21/0553; B60G21/0555; B60T; B60T8/00; B60T8/18; B60T8/1837; B60T8/1843; B60T8/1856; B60T8/1862
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |